Alan Garside Acident
OD,
Alan was engaged in a Low Level Aeros Display when the aircraft 'departed'. Hence, not a lot of height above the surface, high rate of descent and an Ejection Seat pre-Rocket Pack standard. It is some 40+ years since I read the Accident Report but based on the above and my recall, ejection was initiated outside of the survivable ejection envelope for the existing parameters.
lm